Question

Test cross is a cross between:

• A. Hybrid $\times$ Dominant parent $(Tt\times TT)$
• B. Hybrid $\times$ Recessive parent $(Tt\times tt)$
• C. Hybrid $\times$ Hybrid $(Tt\times Tt)$
• D. All the above

Answer 1

The correct option is B Hybrid $\times$ Recessive parent $(Tt\times tt)$

A. Hybrid $\times$ Dominant parent $(Tt\times TT)-$ Back cross
B. Hybrid $\times$ recessive parent $(Tt\times tt)-$ Test cross
C. Hybrid $\times$ Hybrid $-(Tt\times Tt)-$ Interspecific cross
Thus, a test cross is a cross between hybrid and a recessive parent.